printing invoice as excel

Hi Guys! FA is wonderful program, been using it but the invoicing layout is too hard to modify. Ended up using FA only as backend and i've been generating invoices manually as we need custom invoices to suit our needs.

I'm wondering if it is possible to generate invoice as excel so that we can run a macro program in excel to move all the data to a prebuilt custom layout?

Also, it would be great if we can export data to XML and then integrate the invoice layouting with opensource programs like JasperServer and ireport.